Inlet air filtering device convenient to disassemble and assemble

Abstract

The utility model discloses an intake air filter device convenient to disassemble and assemble, which comprises a gas pipeline, a filter tank body, a filter element and a connecting pipe, the filter tank body is sleeved on the connecting pipe, the connecting pipe extends into the filter tank body and exceeds the tank wall of the filter tank body, the connecting pipe is arranged on the gas pipeline, and the filter element is arranged on the connecting pipe. The filter element is mounted in the filtering tank body and sleeves the part, extending into the filtering tank body and exceeding the tank wall, of the connecting pipe; the filtering tank body comprises an upper tank body and a lower tank body, the filter element is arranged in the upper tank body and the lower tank body, the upper tank body is detachably mounted on the lower tank body, a tank opening of the lower tank body is arranged on the connecting pipe in a sleeving manner, and an air inlet is further formed in a tank body of the lower tank body. And the upper tank body and the lower tank body can be quickly detached, so that the efficiency of replacing the filter element of the filtering device by a worker is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification, in particular to an air intake filtering device that is convenient to disassemble and assemble. Background Art

[0002] The turboexpander is a key device, mainly used in air separation plants, natural gas liquefaction plants, energy recovery plants, and other systems that require a compact power source. The working principle of the turboexpander is to use a gas with a certain pressure to adiabatically expand in the turboexpander to do external work, consuming the internal energy of the gas itself, so that the gas is strongly cooled by itself to achieve the purpose of refrigeration. In this process, the kinetic energy of the gas is converted into mechanical work.

[0003] The out-of-control rotation speed of the turboexpander is a serious problem. One of the possible reasons for the out-of-control rotation speed of the turboexpander is that the filter screen on the air inlet filter is blocked by dust and dirt, the air intake volume decreases, and the rotation speed of the expander may rise and get out of control. Usually, the equipment runs at 20,000 revolutions per minute. If the filter is blocked, the fan will lose its braking function, the rotation speed will be out of control, and it may rise to 30,000 revolutions per minute. Out of control, the expander has the risk of burning out. Currently, the filter usually adopts the inlet filter of the braking fan of the fractionation tower of the nitrogen station. The air intake area of the filter is conical, and the filter screen at the air inlet is a dense mesh. The air intake flow is large, and the inlet is often blocked, seriously affecting the start-up. In order to prevent the expander from being damaged due to the blockage of the filter, the filter screen needs to be removed and cleaned with carbon tetrachloride every week. The above installation method of the air filter screen results in the need for three people to spend one hour disassembling and assembling each time the air filter element is replaced. The process is cumbersome and the operation is complex.

[0004] Therefore, it is necessary to provide an air filtering device that can quickly and easily disassemble and assemble the filter screen for this problem. Content of the Utility Model

[0005] Aiming at the above deficiencies, the utility model provides an air intake filtering device that is convenient to disassemble and assemble, which can realize the quick disassembly and assembly of the filter screen, save the time of the staff, and improve the work efficiency.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] An air intake filtering device that is convenient to disassemble and assemble includes an air delivery pipeline, and also includes a filtering tank body, a filter element, and a connecting pipe. The filtering tank body is sleeved on the connecting pipe, the connecting pipe extends into the interior of the filtering tank body and exceeds the tank wall of the filtering tank body, the connecting pipe is installed on the air delivery pipeline, and the filter element is installed in the filtering tank body and sleeved on the part of the connecting pipe that extends into the interior of the filtering tank body and exceeds the tank wall.

[0008] The filter tank body includes an upper tank body and a lower tank body. The filter element is arranged inside the upper tank body and the lower tank body. The upper tank body is detachably installed on the lower tank body. The tank mouth of the lower tank body is sleeved on the connecting pipe, and an air inlet is also provided on the tank body of the lower tank body.

[0009] Preferably, the connecting pipe is provided with a flange, and the flange is fixedly connected to the lower part of the connecting pipe. The connecting pipe is fixedly connected to the gas transmission pipeline through the flange.

[0010] Preferably, the upper tank body is provided with locking buckles. There are multiple locking buckles, which are arranged at the lower part of the upper tank body. A locking ring is arranged at the upper edge of the lower tank body. The inner diameter of the locking ring is larger than the outer diameter of the lower tank body. A locking groove is provided at the lower part of the locking ring. The upper tank body and the lower tank body are fixed through the locking buckles and the locking ring.

[0011] Preferably, the lower tank body is further provided with a mounting block, which is formed by the part of the locking ring extending out of the lower tank body above the locking ring. The upper tank body is fitted and arranged inside the mounting block.

[0012] Preferably, a sealing gasket is also arranged between the upper tank body and the lower tank body.

[0013] Preferably, the upper tank body is provided with a pressure relief valve, and the pressure relief valve is arranged at the upper part of the upper tank body.

[0014] Preferably, a limiting ring is also arranged on the connecting pipe, and the limiting ring is arranged in the middle section of the connecting pipe. The outer diameter of the limiting ring is larger than the inner diameter of the tank mouth of the lower tank body.

[0015] Preferably, it further includes a fixing component and a fixing block. The fixing component includes a connecting plate, a connecting column and a fixing plate. The connecting plate is fixedly connected to the gas transmission pipeline. The connecting column is vertically arranged on the connecting plate. The fixing block is arranged on the lower tank body. The fixing plate is slidably arranged on the connecting column and is fixedly connected to the fixing block on the lower tank body through bolts.

[0016] Preferably, the fixing plate includes a first fixing plate and a second fixing plate, and the fixing block includes a first fixing block and a second fixing block. The first fixing block is arranged at the lower part of the lower tank body, and the second fixing block is arranged at the upper part of the lower tank body. The first fixing plate is fixedly connected to the first fixing block through bolts, and the second fixing plate is fixedly connected to the second fixing block through bolts.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. Compared with the traditional conical filter installed in the gas transmission pipeline, the utility model realizes quick disassembly of the upper tank body and the lower tank body by setting a filter tank body, a filter element and a connecting pipe. The filter tank body includes an upper tank body and a lower tank body, and the upper and lower tank bodies are sealed and connected. A lock catch is arranged at the lower part of the upper tank body, and a lock ring is arranged at the upper edge of the lower tank body. The cooperation of the lock ring and the lock catch can achieve quick disassembly of the upper tank body and the lower tank body. The filter tank body is sleeved on the connecting pipe, the connecting pipe extends into the filter tank body and exceeds the tank wall of the filter tank body, the connecting pipe is installed on the gas transmission pipeline, the filter element is installed in the filter tank body and sleeved on the part of the connecting pipe extending into the filter tank body and exceeding the tank wall. After removing the upper tank body, the filter element can be conveniently replaced. After the technical transformation, not only the problem of mesh blockage is solved, but also the disassembly and assembly are more convenient. After the technical transformation, it only needs to remove the filter screen and blow it with compressed air once a month. It is measured that before the technical transformation, it originally required 3 people for 1 hour for disassembly and assembly, and after the technical transformation, 1 person can complete disassembly and assembly in 30 minutes.

[0019] 2. The utility model changes the original conical filter element into a cylindrical filter cartridge, and selects suitable plastic and filter cotton mesh instead of the original steel material, which increases the intake filter area. Not only the problem of mesh blockage is solved, but also the disassembly and assembly are more convenient. It only needs to remove the filter screen and blow it with compressed air once a month, which greatly reduces the daily maintenance cost of the filtering device. Brief Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 It is a sectional view of the present utility model;

[0023] Figure 3 In the present utility model Figure 2 The enlarged view of part A;

[0024] Figure 4 It is a schematic diagram of the internal structure of the present utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the fixing plate of the present utility model.

[0026] Reference Signs: 1, lower tank body; 2, air inlet; 3, first fixing block; 4, second fixing block; 5, upper tank body; 6, air release valve; 7, connecting plate; 8, connecting column; 9, first fixing plate; 10, second fixing plate; 11, lock catch; 12, lock ring; 13, gas transmission pipeline; 14, connecting pipe; 15, limiting ring; 16, filter element; 17, lock groove; 18, sealing gasket. Detailed Embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] Such as Figures 1-6As shown in the figure, the present utility model provides an air intake filtering device with convenient disassembly and assembly, which includes a filtering tank body, a filter element 16, an air delivery pipeline 13 and a connecting pipe 14; the connecting pipe 14 is a short pipe with a flange provided at the lower part, and a limiting ring 15 is provided on the short pipe, and the limiting ring 15 is used to limit the position of the filtering tank body. The air delivery pipeline 13 is provided with a flange identical to that of the connecting pipe 14, and the air delivery pipeline 13 and the connecting pipe 14 are fixedly connected through the flange. The filtering tank body includes a lower tank body 1 and an upper tank body 5. The upper tank body 5 and the lower tank body 1 are cooperatively installed together. The lower part of the lower tank body 1 is the air outlet of the filtering tank body. The air outlet of the lower tank body 1 is sleeved on the short pipe of the connecting pipe 14 and is limited by the limiting ring 15 to prevent the lower tank body 1 from falling. The lower tank body 1 is hermetically connected to the connecting pipe 14. The short pipe of the connecting pipe 14 extends into the tank body and exceeds the inner wall of the tank body. The filter element 16 is sleeved on the short pipe extending into the tank body. On the tank body of the lower tank body 1, an air inlet 2 for inputting air to be filtered is provided. The air inlet 2 is circular, which is convenient for connecting with the air delivery pipe. The upper tank body 5 is hermetically connected to the upper part of the lower tank body 1.

[0031] During use, the dirty gas enters the filtering air tank from the air inlet 2. The gas passes through the filter element 16 for filtration, and after the fine dust in the gas is filtered, it is output through the air delivery pipeline 13. After using for a period of time, the filter element 16 will be unable to filter the gas normally due to the coverage of fine dust. To prevent the filter element 16 from being blocked, it is necessary to clean or replace the filter element 16 regularly. At this time, only the upper tank body 5 needs to be removed, the blocked filter element 16 is taken out from the filtering tank body, and after cleaning, it is put back or a new filter element 16 is taken and sleeved on the connecting pipe 14 protruding inside the filtering tank body, and then the upper tank body 5 is hermetically connected to the lower tank body 1 again, and the air can continue to be filtered. The method of replacing the filter element 16 is simple and fast, which greatly improves the efficiency of the staff in replacing the filter element 16.

[0032] In a preferred air intake filtering device with convenient disassembly and assembly, the filter element adopts a cylindrical filter element 16. In the traditional method, the filter uses a cylindrical filter element, the air inlet filter screen is a dense screen, the air intake flow is large, the inlet is often blocked, which seriously affects the startup. The filter screen needs to be disassembled and cleaned with carbon tetrachloride every week. The filtering area of the filter element is small, the service life is short, and the complex disassembly and assembly method of the conical filter element 16 further increases the workload of the staff and is not conducive to daily maintenance. By adopting the cylindrical filter cartridge of the filter element 16, on the one hand, the air intake filter screen area is increased, and on the other hand, it is convenient for disassembly and assembly. The staff only needs to remove the upper tank body 5 to disassemble and assemble the filter element 16, which greatly reduces the daily maintenance cost of the filtering device.

[0033] In a preferred air intake filtering device with convenient disassembly and assembly, the material used for the frame of the filter element 16 is plastic, and the filter screen adopts a filter cotton net, which solves the problem of mesh blockage and is more convenient for disassembly and assembly.

[0034] In a preferred intake air filtering device that is convenient for disassembly and assembly, a pressure relief valve 6 is provided at the upper part of the upper tank body 5. Considering that after the filter element 16 is completely blocked, the gas accumulates in the tank body, and the internal pressure of the tank body increases. At this time, there will be safety risks for the staff during the disassembly and assembly operation of the filter element 16. At this time, it is necessary to discharge the gas accumulated in the filtering tank body in advance. The setting of the pressure relief valve 6 facilitates the staff to discharge the high-pressure gas in the tank body and reduces the risk for the staff.

[0035] In a preferred intake air filtering device that is convenient for disassembly and assembly, the upper tank body 5 and the lower tank body 1 are fixed by a locking buckle 11. There are multiple locking buckles 11, which are evenly distributed axially at the lower part of the upper tank body 5. A locking ring 12 is provided at the upper edge of the lower tank body 1. The inner diameter of the locking ring 12 is the same as the outer diameter of the tank body. The upper part of the locking ring 12 extends out of the tank body of the lower tank body 1 to form a mounting block, and the upper tank body 5 is fitted and arranged in the mounting block. A locking groove 17 is provided at the lower part of the locking ring 12. The fastener in the locking buckle 11 can be buckled in the locking groove 17 of the locking ring 12 when in the locked state, so that the upper tank body 5 and the lower tank body 1 are better fixed. When it is necessary to disassemble the upper tank body 5, it is only necessary to loosen the locking buckle 11, and then the upper tank body 5 can be quickly disassembled.

[0036] In a preferred intake air filtering device that is convenient for disassembly and assembly, in order to enable better sealing between the upper tank body 5 and the lower tank body 1 and achieve a better filtering effect, a rubber sealing gasket 18 is also provided between the upper tank body 5 and the lower tank body 1. The rubber sealing gasket 18 is located inside the locking ring 12 at the docking position of the upper tank body 5 and the lower tank body 1.

[0037] In a preferred intake air filtering device that is convenient for disassembly and assembly, it also includes a fixing component and a fixing block. The fixing component includes a connecting plate 7 fixedly connected to the air delivery pipeline 13. The connecting plate 7 is welded to the flange on the air delivery pipeline 13. On the connecting plate 7, a connecting column 8 is fixedly arranged in the vertical direction. The fixing block is arranged on the lower tank body. The fixing plate is slidably arranged on the connecting column and is fixedly connected to the fixing block on the lower tank body by bolts. Such a setting makes the filtering device more stable to prevent damage to the tank body caused by external factors such as strong wind weather.

[0038] In a preferred air intake filtering device that is convenient for disassembly and assembly, the fixing plate includes a first fixing plate 9 and a second fixing plate 10, and the fixing block includes a first fixing block 3 and a second fixing block 4. A first fixing block 3 is provided at the lower part of the tank body of the lower tank body 1. There are two first fixing blocks 3, which are symmetrically and fixedly arranged on the tank body opposite to the air inlet 2. A through hole is provided in the middle of the first fixing plate 9. The first fixing plate 9 is slidably arranged on the connecting column 8 through the through hole. At both ends of the first fixing plate 9, connecting holes are provided corresponding to the positions where the first fixing block 3 has openings. The first fixing block 3 and the first fixing plate 9 are fixed by bolts. The second fixing plate 10 is the same as the first fixing plate 9. The second fixing plate 10 is slidably arranged on the connecting column 8 and is located above the first fixing plate 9. A second fixing block 4 is provided at the upper part of the tank body of the lower tank body 1. There are two second fixing blocks 4, which are symmetrically and fixedly arranged on the tank body opposite to the air inlet 2 and are in the same vertical plane as the first fixing block 3. The second fixing plate 10 and the second fixing block 4 are fixed by bolts. The arrangement of the second fixing plate 10 and the second fixing block 4 makes the filtering device more firmly fixed.

[0039] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. An air intake filtering device with convenient disassembly and assembly, including an air delivery pipeline (13), characterized in that: It further includes a filtering tank body, a filter element (16) and a connecting pipe (14). The filtering tank body is sleeved on the connecting pipe (14). The connecting pipe (14) extends into the interior of the filtering tank body and protrudes beyond the tank wall of the filtering tank body. The connecting pipe (14) is installed on the gas transmission pipeline (13). The filter element (16) is installed in the filtering tank body and sleeved on the part of the connecting pipe (14) that extends into the interior of the filtering tank body and protrudes beyond the tank wall. The filtering tank body includes an upper tank body (5) and a lower tank body (1). The filter element (16) is arranged inside the upper tank body (5) and the lower tank body (1). The upper tank body (5) is detachably installed on the lower tank body (1). The tank mouth of the lower tank body (1) is sleeved on the connecting pipe (14). An air inlet (2) is also formed in the tank wall of the lower tank body (1).

2. The air intake filtering device with convenient disassembly and assembly according to claim 1, wherein: The connecting pipe (14) is provided with a flange. The flange is fixedly connected to the lower part of the connecting pipe (14). The connecting pipe (14) is fixedly connected to the gas transmission pipeline (13) through the flange.

3. The intake air filtration device with convenient disassembly and assembly according to claim 1, characterized in that: The upper tank body (5) includes a plurality of locking buckles (11). The locking buckles (11) are evenly arranged circumferentially at the lower part of the upper tank body (5). A locking ring (12) is arranged at the upper edge of the lower tank body (1). The inner diameter of the locking ring (12) is larger than the outer diameter of the lower tank body (1). A locking groove (17) is formed in the lower part of the locking ring (12). The upper tank body (5) and the lower tank body (1) are fixed through the locking buckles (11) and the locking ring (12).

4. The air intake filtering device with convenient disassembly and assembly according to claim 3, wherein: The lower tank body (1) is further provided with a mounting block. The mounting block is formed by the part of the locking ring (12) that extends out of the lower tank body (1) above. The upper tank body (5) is fitted and arranged in the mounting block.

5. The air intake filtering device with convenient disassembly and assembly according to claim 1, characterized in that: A sealing gasket (18) is also arranged between the upper tank body (5) and the lower tank body (1).

6. The intake air filtration device with convenient disassembly and assembly according to claim 1, characterized in that: The upper tank body (5) is provided with a pressure relief valve (6). The pressure relief valve (6) is arranged at the upper part of the upper tank body (5).

7. The intake air filtering device with convenient disassembly and assembly according to claim 1, characterized in that: A limiting ring (15) is further arranged on the connecting pipe (14). The limiting ring (15) is arranged in the middle section of the connecting pipe (14). The outer diameter of the limiting ring (15) is larger than the inner diameter of the tank mouth of the lower tank body (1).

8. The air intake filtering device with convenient disassembly and assembly according to claim 1, characterized in that: It further includes a fixing component and a fixing block. The fixing component includes a connecting plate (7), a connecting column (8) and a fixing plate. The connecting plate (7) is fixedly connected to the gas transmission pipeline (13). The connecting column (8) is vertically arranged on the connecting plate (7). The fixing block is arranged on the lower tank body (1). The fixing plate is slidably arranged on the connecting column (8) and fixedly connected to the fixing block on the lower tank body (1) through bolts.

9. The air intake filtering device with convenient disassembly and assembly according to claim 8, characterized in that: The fixed plate includes a first fixed plate (9) and a second fixed plate (10), the fixed block includes a first fixed block (3) and a second fixed block (4), the first fixed block (3) is arranged at the lower part of the lower tank body (1), the second fixed block (4) is arranged at the upper part of the lower tank body (1), the first fixed plate (9) is fixedly connected to the first fixed block (3) by bolts, the second fixed plate (10) is fixedly connected to the second fixed block (4) by bolts, and the second fixed plate (10) is located above the first fixed plate (9).

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